Improvement in shuttles for looms



Patented April 25, 1871.

UNITEDSEATES PATENT OEEIoE.

JULIUs KUTTNEE, or NEW YORK, N. Y.

IMPROVEMENT IN SHUTTLES FOR LOOMS.

Specification forming part of Letters Patent No. 114,155, dated April25, 1871.

To all whom it 'may concern:

Be it known that I, JULIUS KUTTNER, of the city and State of New York,have invented an Improvement in Shuttles for Looms; and the following isdeclared to be a correct description thereof.

This shuttle is adapted especially to use in looms for weaving corsets,but may be used in other characters of looms.

Difeulty has heretofore arisen in weaving corsets in consequence of theweft-thread forming into loops upon the surface of the fabric at theedges of woven gores, from the slack weft-thread not being drawn up.Various devices, such as a reversible shuttle and a springtension, havebeen devised to endeavor to overcome this difficulty; and in someinstances, where the slack loops of weft-thread have been prevented,another difficulty has arisen from the tension being too great upon theweft-thread; hence the warp-threads at the inner ends of the wefts ofthe gores have been drawn out of line; hence uniformity in the fabrichas been prevented.

My invention consists in a let-off motion applied to the weft-threads,said let-off operating when the shuttle is between the warps to allowthe weft-thread to draw off freely, and ceasing to operate when theshuttle passes clear of the upper shed of warp. The weft thread that isdrawn off during the other portions of the movements of the shuttlerevolves the spool or bobbin against the action of a delicate spring,which spring again winds up such weftthread as the shuttle moves in theopposite direction.

By this construction the amount of weftthread allowed to pass entirelyfrom the bobbin is regulated by the width of the shed, whether that shedis the entire width of the goods or only a portion thereof, as in weaving a gusset.

In the drawing, Figure l is a plan of a shuttle tted with myimprovement, a portion being in section, and Fig. 2 is a cross-sectionat the line nv fr.

The shuttle a, with its rollers c, is of the lcharacter adapted to usein the positivemotion loom patented by James Lyall, and the removablecase c, carrying the spool or bobbin to that employed by him, except inthe particulars hereafter set forth.

The spool or bobbin d is mounted upon a spindle, f, that is held in by aspring-center, 2, and can be taken out for receiving upon it said spoold. The spool d has a hole large enough to pass over the xed sleeve g andspring h and set upon the loose conical collar 3, so that, when thespindle f is prevented from revolving, the spring h will be wound up bydrawing off the weft-thread, because one end of the spring h., that isattached to the sleeve g, will be held stationary, while the other endof said spring will be revolved by and with the conical collar 3 andspool d. The spring h is only sufleiently strong to revolve the bobbinor spool d and wind up the weftthread when the pull thereon is relieved.

It will now be seen that, if the spindle f is allowed to revolve whilethe shuttle is passing through the shed, the weft-thread will draw offwith little or no resistance; but so soon as the spindle is held fromrevolving the pull of the weft-thread winds up the spring h, and that,in turn, rewinds the weft, taking up the slack upon the return movementof the shuttle.

The holding and liberating of the spindle f are effected .by thefriction-spring Z, acting against the disk 5 on the lspindle f, and thewarp-arms a and friction-reliever o. These arms n are hinged together inthe middle, and at the ends to the shuttle, and the reliever 0 extendsfrom one arm, a, to the spring l. The power of this spring l issuflicient to hold up these arms u slightly above the shuttle and arrestthe revolution of the spindle f while the shuttle is out of the shed ofwarps; but, so soon as the shuttle enters the shed, the warps, pressingupon these arms u, depress them, and move the spring Z from contact withthe disk 5, and allow the spool and spindle to revolve freely as theweft-thread is drawn olf; but, on leaving the shed, the spring l againoperates to hold the spindle from revolving, so that the spring h may bemade operative to revolve the spool and rewind the weftthread and takeup the slack.

The weft-thread passes through the eye s, that is fitted to slide in theslotted bow t;

d, and retained by the latch c, is also similar and very slightindia-rubber cords or other springs u retain this eye in a centralposition, except when the tension of the weft-thread draws this eye toeither one side or the other; hence the weft-thread 4Will not be allowedto remain in loops upon the surface of the fabric; neither will there bestrain upon the weftthread sufficient to draw the Warp-threads out ofline at either the selvage or at the intersections of the gores with thebody of the fabric.

If it were desired to relieve the warp-threads of any strain the arms nmight be operated upon by stops controlled by the jacquard, so as toapply friction to the spindle of the spool when the shuttle is not inthe shed.

I claim as my invention- 1. The arms n and reliever o, in combinationwith the friction-spring l, spindle f, and

JuLIUs KUTTNER.

Witnesses: W Y

HAROLD SERRELL, Gno. T. PrNoKNnY.

